AAVSO AAVSO Alert Notice 515
SN 2015F in NGC 2442 (PSN J07361576-6930230)
March 31, 2015

Event: Supernova in NGC 2442: SN 2015F = PSN J07361576-6930230

Discovered by: Libert A. G. Monard, Calitzdorp, Western Cape, South Africa

Discovery magnitude: 16.8 unfiltered CCD using a 35-cm RCX400 telescope (+SBIG ST8-XME camera)

Discovery date: 2015 March 9.789 UT

Coordinates: R.A. 07 36 15.76 Dec. …

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Two of ESA’s space observatories have combined to create a multi-wavelength view of violent events taking place within the giant galaxy of Centaurus A. The new observations strengthen the view that it may have been created by the cataclysmic collision of two older galaxies.


The peculiar galaxy Centaurus A in the far-infrared and X-rays. Inner structural features seen in this …

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